Abstract Detail
Symposium: Speaking of Food: connecting basic and applied science Ellstrand, Norman [1]. When good crops go bad: the evolution of invasives and weeds from food plants. Comparing new invasives and new weeds with their benign progenitors can provide insights into the evolutionary pathways enabling ecological change. Feral food plants that have evolved invasiveness are ideal platforms for investigation because their ancestors are so well studied. I present three contrasting case studies of problematic plants that evolved from feral ancestors over the last century: California wild radish, Great Basin weedy rye, and California wild artichoke thistle. Then I review about 20 independent cases of invasive/weed evolution from feral food plants, both problem plants directly evolved from crops (endoferality) as well as those that evolved following hybridization between a crop and a wild relative (exoferality). The trends emerging from the review suggest avenues for future research. Broader Impacts:
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1 - University of California, Department of Botany & Plant Sciences, UCR, Riverside, CA, 92521-0124, USA
Keywords: invasive species Evolution Weed crop wild relative crop feral.
Presentation Type: Symposium or Colloquium Presentation Session: SY06 Location: Grand Ballroom A/Riverside Hilton Date: Tuesday, July 30th, 2013 Time: 10:30 AM Number: SY06005 Abstract ID:1150 Candidate for Awards:None |